Pivot hinge for windows



June 2, 1953 E. SARENHOLM PIVOT HINGE FOR WINDOWS 2 Sheets-Sheet 1 Filed Aug. 6. 1947 INVENTOR Elnar Jar en 02m BY j: Z

M 2 1 ATTORNEYS June 2, 1953 E. SARENHOLM PIVOT HINGE FOR WINDOWS Filed Aug. 6. 1947 2 Sheets-Sheet 2 llllulllla ll s ll fl llllll'uVlllllllillllull V INVENTOR Elna-(r t krenkoZ Patented June 2, 1953 PIVOT HINGE FOR WINDOWS Einar Siirenholm, Eskilstuna, Sweden, assignor to Svartviks Aktiebolag, Sundsvall, Sweden, a corporation of Sweden Application August 6, 1947, Serial No. 766,712 In Sweden May 12, 1943 Section 1, Public Law 690, August 8, 1946 Patent expires May 12, 1963 2 Claims. (Cl. 16-172) The present invention relates to a pivot hinge for windows having a vertically swingable casement (or easements), wherein a hinge fitting is made to be arranged on the window frame and another to be arranged on the casement, and an intermediate member between the two hinge fittings is swingably suspended on one of said fittings while being connected to the other fitting in such a manner as to determine, when the hinge is arranged in its place, together with a stop limiting the swinging range thereof, a small opening position for the window (the ventilation position) while also permitting continued swinging of the window casement (easements) from this position into a position, wherein the outside of the window is turned inwardly, one of the places of connection on the intermediate member forming a pin and slot connection.

The substantial characteristic of the invention is, in the first place, that a slot comprised in the pin and slot connection is associated with an edge recess, with which a carrier member such as for example a pin is engaged, when the window is swung between the closed position to the small opening position or vice versa, said carrier member being moved out of said edge recess in swinging the window from the small opening position to a larger opening.

Furthermore, it will be possible, by suitably shaping the intermediate member and suitably locating the points of suspension, to provide tightening fillets between the window frame and the easement in such manner that untight points are eliminated about the hinge. Within the scope of the invention it is possible, furthermore, to attain such constructions of the hinge that perfect insulation is obtained against cold.

Further features characteristic of the invention and advantages inherent therein appear from the following description of an embodiment illustrated in the accompanying drawing. Fig. 1 is a side view showing a swingable window, the easement of which is adjusted in ventilation position. Fig. 2 is a side view of the same window with the window casement swung round in its entirety for cleaning or the like. Fig. 3 is a sectional view in an enlarged scale, of the hinge proper showing the position of certain parts of the hinge. Fig. 4 is a side view showing the configuration of the tightening fillets fitted into the sides of the window. Figs. 5 and 6 are side views showing the fitting of the hinge into the sides of the window frame and the window casement, respectively, and, Figs. 7 and 8 are diagrammatic views of the hinge showing different stages in the function of the hinge;

The hinge comprises two fittings I and 2 adapted to be fitted into the sides of the Window frame and the window casement facing each other (Fig. 3), and an intermediate member 3 between the fittings and 2, which is swingably suspended on the fitting I while being connected to the other fitting 2 in such manner as to determine, together with a fixed stop, here in the form of an abutment 4 secured on the fitting l, a ventilation position for the window (Figs. 1 and 7) while also permitting continued swinging of the window casement from this position into a position, wherein the outside of the window is turned inwardly (Figs. 2 and 8).

In the embodiment shown, the connection between the fitting 2 and the intermediate member 3 is provided by means of a carrying pin 6, which is secured to the fitting 2 while resting in an edge recess or slot 15 in the intermediate member 3. The latter is in turn suspended on the fitting l by means of a carrying pin 1, preferably in the form of a rivet. Furthermore, the fitting 2 has a carrier member arranged thereon, preferably in the form of a pin 5, and this member also engages the edge recess or curved slot [5 in the position of closure of the window (Fig. 5). As long as the carrier pin 5 bears on the edge of the recess 15, movement may be transmitted from the fitting 2 secured on the window casement to the intermediate member 3, so that the latter may be swung about the carrying pin I. If the window casement is swung upwardly with its lower edge from its position of closure, the intermediate member 3 strikes against the fixed stop 4 (Fig. 7) and cannot then be turned further in the same direction. The window casement is thus suspended on both pins 6 and I at the same time and is thus retained in a definite position, the open position. If the swinging of the window casement is continued, the same now turns about the pin 6, the carrier pin 5 being thus caused to leave the recess I5 so as to take the position shown in Fig. 8, when the window is completely swung around. When the window is closed again, the carrier pin is caused during the turning movement about the pin 6 to enter the edge recess l5 anew so as to bear on the edge thereof, so that the intermediate member 3 is entrained during the last portion of the movement and the turning movement is effected about the pin 1.

The intermediate member 3 is preferably formed as a circular sector and has its suspension point at the center of the circular arc. To this end, tightening fillets l3, I4, preferably in the form of wooden fillets arranged on the sides of the casement and the frame facing one another,

3 may be provided and formed as shown in Figs. 4, and 6, the fillet [3 being mounted on the frame and the fillet I4 on the easement. It will be seen .irom Fig; thew. the endgof' thewooden fillets turned against each other arecaused to bear on one another on a plane surface 8, after the window has been closed, and how the ends are formed to afford space for themoyement of,

the intermediate member 3 formed as a circular sector.

bent flange [G at the peripheral portion of the intermediate member 3. Furthermor,e,.the.inter-..

mediate member is reinforced in the regionlabout the edge recess l5 by a plate El, which is secured by rivet ll, 12 to the intermediate member 3 The bearing surface of the pins 5, 6 is increased through this plate 9'.

An easy and pleasing; operation of the window is obtain d throughthe intermediate memberand thespecific formation thereof and through the method ofconnectin the same w th. the. fittings and,;fu1ithe1:mor the. construction affords y t tightening filletsa. perfect tightening fit, against raught and insulation. a ainst old. Because of, theiactthat. the. edgerecossv L5 is, open; the window casement. may also be, readily hooked down fromthe hingeait required.

The inventionisnot limited to the embodiment, shown in the; drawing said embodiment .serying. only as an elucidating example.

What: I,- claimis: 1. In windows having ,aira-me. and a casement,

aihinee-tor:thezsuspensiorr of. the easement in tinggror supportingthecasement; on the. inter- Covering of the gap. between. the ends of the fillets l3, I4 is obtained 'by -amupwardly;

actuation of the intermediate member and to release the abutment member for allowing the casement to be swung open further from said small opening position.

2.; A. hinge according to claim 1, in which the intermediate member has the shape of a sector of a circle and has its suspension point located in the proximity of the centre of the circle, the

centrev angle of the sector formed by the intermediate member plus the angle covered by'said intermediate member in swinging the casement from it.") closed position to the open position being lessthan together with the turning angle of'the intermediate member at a swinging movement into the open position.

SARENHQLM.

References Cited inthe file of this patent- UNITED STATES, PATENTS Number Name Date 529,171 Hegenscheidt Nov; 13, 1894 FOREIGN PATENTS Number Country. Date,

5458,3441 Great. Britain Qct. 27,1942 

